Car roof



April 26, 19?*24- c. D. BONSALL 1,855,935

' CAR ROOF Filed July l, 1951 Patented Apr. 26, 1932 UNITED STATES PATENT oFFlcE CHARLES DAVID BONSALL, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO P. H. MURPHY COMPANY, OF NEW KENSINGTON, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA CAR Application filed July 1,

This invention relates to car roofs of the type shown in my Patent No. 1,830,975, dated February 17, 1920, wherein the roof sheets span the car from side plate to side plate and are provided along their adjacent margins with raised flanges that are overlapped and rigidly secured together to form hollow upstanding seams that function as exterior carlines.

The principal object of the present invention is to provide a simple and eiiicient arrangement for preventing any water that may leak between the seam flanges or around the rivets that secure them together from reaching the interior of the car. Other objects are to increase the strength and rigidity of the seams and to improve the appearance of the undersideof the roof. The invention consists in the parts and in the arrangements and combinations of parts hereinafter described and claimed.

In the accompanying drawings, which form part of this specification and wherein like symbols refer to like parts Wherever they occur,

Fig. 1 is a plan vieW of a portion of a car roof embodying my invention.

.Fig 2 is a vertical cross-section through one-half of the roof, the section being taken between seams on the line 2-2 in Fig. 1,

Fig. 3 is a vertical longitudinal section through the roof at the ridge, the section being taken at one of the roof seams on the line 3-3 in Fig. 2,

Fig. 4 is a cross section through the seam near the eaves on the line44 in Fig. 2; and

Fig. 5 is a vertical transverse section taken through the roof at the eaves, the section being taken through one of the seams on the line 5 5 in Fig. 1.

Referring to the accompanying drawings, my invention is shown in connection with an all-steel riveted-up roof comprising pitched metal roof sheets A that extend from side plate B to side plate B of the car and are rigidly connected along their adjacent side margins by hollow upstanding seams C which function as roof supporting carlines. The side plates B are preferably of substantially Z-shaped cross-section and are ar- ROOF ranged with the inner flange 1 upstanding and extending inwardly at its top at an angle conforming to the pitch of the roof to form a support for the eaves end portions of the roof sheets to rest upon. The roof sheets A .are provided with depending eaves lianges 2 that overlap and are rigidly secured to the upstanding portions of the inner flanges l ofthe side plates B by horizontal rivets 3.

The roof sheets A are provided along their adjacentl side margins with raised seam flanges that are overlap ed to form the hollow upstanding seams Each of the side marginal sheet flanges 4 gradually diminishes in height from the ridge towards the eaves and gradually changes from an inverted -shaped section at the ridge to an inverted channel shaped section adjacent to the eaves. sheets, the side marginal seam flanges 4 thereof merge abruptly into the plane of the bodies thereof; and at points adjacent to the eaves where the outer walls of the inverted channel-shaped portions of said seam flanges reach the plane of said sheets, said wallsare turned outwardly to form the flanges 5. The overlapped side marginalseam flanges 4 of adjacent roof sheets are rigidly secured together throughout their length by means of rivets 6 that pass through the overlapped top portions thereof. The side walls of each seam flange 4 are inclined away from each other from top to bottom, whereby the seams C formed by said fianges verging side walls.

In order to prevent any water that may enter the seams C through the joints between the seam flanges 4 or around the securing riv- At the eaves ends of the roof have upwardly con- Y ets 6 for said flanges, each seam is provided wedged tightly in the seam to obtain a tight joint between the side flanges of the said strip and the side walls of said seam. At the eaves of the car, the drain strip D is supported on the inwardly extending sheet supporting portions of the flanges ot the side plates and irs provided with depending end flanges 8 that are overlapped by the overlapped ends of the depending eaves flanges 2" of adjalcent rooiV sheets and. are secured to said side plate flanges .by the rivets 3 fior said eaves flanges.

Each drain strip D is drawn upwarcillyv within the hollow seam C with lwhichit cooperates by means of bolts 9carrie`d by brachets or clips 10 located inside of said seam and secured to the top walls thereof by thev securing rivets 6 tor the seam flanges 4 which form said seam. The bolt hangers 10 are preferably located adjacent to the ridge and eaves of the car' with their ends riveted flatwise to the undersides of the seam.. These bolt hangers are perforated'- intermediate their ends to receive the bolts' `9`A and have their perforated portions offset downwardly, as at 11, to` accommodate the heads' of said bolts. The lower ends of the bolts 9 extend downwardly through holes provided therefor in upstandingbosses 12 formed in the bottom of the drain stripv and are provided with nuts 13, which lit withink said bosses and, when tightened, cause said strip to be drawn upwardly until they become wedged between the upwardly" converging side walls of the' seam.

By the arrangement described, any water that enters the seams between. the cooperating seam flanges thereof or through the holes for the securing rivets for said langes will be caught in the' drain. strips and will drain lengthwise thereof and be delivered over the ends of said strips to the outside of the car. It is noted that these drain strips span. the car from side plate to side plate and fit tightly within the seams and thus serve to stillen said seams and increase the load-carrying capacity thereof. Itis also-noted that the' drain strips serve to close the bottoms of the seams and thus improve the appearance of the underside of the root'. lt is also noted as animportant advantage that a tight fitof' the drain strips withinthe' seams may be readily ob tained merely by tightening the nuts on the supporing bolts for said drain strips.

lhat l' claim is:

1. A car roof comprising roof sheets connected by hollow' downwardly opening seams, and drain. strips locatedwithin said seams and closing the bottoms thereof.

2. A car roof comprising roof sheets connected by hollow upstanding seams with upwardly converging side walls, and drain strips located within said seams substantially flush with the underside of the roof, said drain strips having upwardly converging side flanges adapted to rictionally engage the side walls of said seams.

3. A car root comprising roof sheets connected by hollow upstanding seams, and

drain strips located within said seams substantially flush with the underside of the roof, said drain strips being provided with side marginal llanges adapted to frictionally engage the side walls of said seams.

4. A car root comprising roof sheets provided along their adjacent side marginswith flanges that are overlapped and rigidly secured together to form hollow upstanding seams, drain strips located within said seams and having side marginal flanges adapted to rictionally engage the opposite side walls thereof. y

5. A car roof comprising roo-i sheets connected by hollow upstanding seams with upwardly converging side walls, and drain strips located within saidseams, said drain strips being provided. with side marginal llanges adapted to Jfrictionally engage the side walls of said seams.

6. A car roof comprising root sheets provided along their adjacent side margins with flanges that are overlapped and rigidly secured together to form hollow upstanding seams with upwardly converging side walls,

and drain strips located within said seams :25S

and having upwardly convergingside marginal flanges adapted to frictionally engage the upwardly converging side walls thereof.

7. A car roof comprising. roof sheets connected by hollow upstanding seams with upwardly converging side walls, drain strips located within said hollow seams, and means for drawing said drain strips upwardly within said seams to wedge the drain strips in the seams.

8. A car roof comprising root sheets connected by hollow upstanding seams with upwardly converging side walls, drain strips located within said hollow seams,'and means for drawing said drain strips upwardly with- To in said seams to wedge the drain strips in the seams, said means comprising bolts secured within said seams and engaging said drain strips.

9. A car roof comprising roof sheets cony nected by hollow upstanding seams, drain strips located within said seams, and means for securing said drain strips in said seams, said means comprising bolts mounted in said seam and nuts carried by said bolts and bearing against the undersides of said strips.

l0. A car roof comprising roof sheets provided along their adjacent side margins with flanges that are overlapped and rigidly secured together to form hollow upstanding seams, drain strips located within said seams and having side marginal flanges adapted to frictionally engage the opposite side walls thereof, and means for securing said drain strips in said seams, said. means comprising 3.7

bolts mounted in said seam and nuts carried by said bolts and bearing against the undersides of said strips.

11. A car roof comprising roof sheets oonnected by hollow upstanding seams with upwardly converging side walls, drain strips located within said hollow seams, and means for drawing said drain strips upwardly Within said seams to wedge the drain strips in the seams, said means comprising bolts depending from the tops of said seams, and nuts threaded on the lower ends of said bolts', said drain strips being provided with upstanding bosses that are provided with openings adapted to receive said bolts and are made hollow to accommodate said nuts.

12. A car roof comprising roof sheets provided along their adjacent side margins with flanges that are overlapped and form hollow upstanding seams, drain strips located within said seams, and means for securing said drain strips in said seams, said means comprising hangers located within said seams, and bolts mounted in said hangers and pass ing through said drain strips, and nuts threaded on said bolts beneath said drain strips. p

Signed at New Kensington, Pennsylvania, this 27th day of June, 1931.

CHARLES DAVID BONSALL. 

